Bootleg Inc Upper Receiver AR-15 Complete Retal Packaging Black. Machined out of 7075 Billet Aluminum MIL-SPEC Hard Anodizing Forward assist eliminated for weight saving and reduced snag risk for a total of 7.2 oz in weight. Low Profile brass deflector captured dust cover door pin eliminating the need for the E clip. Specifications for Bootleg Inc AR-15 Upper Receiver: Manufacturer: Bootleg Inc Finish: MIL-SPEC Hard Anodizing Color: Black Fabric/Material: 7075 Aluminum Gun Type: Rifle Gun Make: AR Platform Gun Model: AR-15 Weight: 7.2 oz Condition: New Magazine Included: No Package Contents: Bootleg Inc AR-15 Upper Receiver What firearm models does the manufacturer say Bootleg Inc AR-15 Upper Receiver is compatible with? The manufacturer says that Bootleg Inc AR-15 Upper Receiver is compatible with AR-15Bootleg Inc BP-UR-1A: Upper Receiver AR-15 Complete Retal Packaging Black